Air-feeding device for furnaces.



PATBNTED APR. 4, 1905.

lie/786,726.

M. E, CASEY.

AIR FEEDING DEVICE FOR FURNACES.

AP PLIOATIONIILED JUNE 17, 1904.

N0. reeves.

lNrrnn STATES PATENT ()FFl'Ql-E.

Patented April- 4, 1905.

,lVIICHAEL EDWARD wear, or MANSFIELD, o1-11o.

AlR-FEEDING DEVICE FOR FURNACES.

SPECIFICATION forming part of Letters Patent No. 786,726, dated April 4, 1905. Application filed June 17, 1904. Serial No. 213,032.

, cation.

My invention has for its object the construction of a steam-boiler or furnace having an aux liary combustion-chamber located 1n such a relative position to the lire-box as will permit, Without obstruction and in the direct line of draft, the uncons umed gases to enter the chamber and means for admitting air into the chamber in such quantities as to properly mix with the gases and burn, evolving and generating more heat from the fuel than could be obtained if the gases passed out through the chimney unconsumed, thereby resulting in a saving of fuel and arresting the smoke and com'bustibles, causing the consn mption of the same.

Another feature of my invention is the method employed in constructing a boiler or furnace and combining it with a fire-box and combustion-chamber in such a manner as to afford facilities for consuming the smoke and gases.

With the above and other objects in view the invention consists-in the novel construction, combination, and arrangement of parts to be hereinafter more fully described, and specifically pointed out in the claims.

1 In describing the invention in detailreference is had to the accompanying drawings, forming a part of this specification, and wherein like characters of reference indicate correspending parts throughout the several views, in which 1 Figure 1 is a longitudinal sectional elevation of a straw-burning boiler to which my invention is applied. Fig. 2 is an end elevation on line 00 m of Fig. 1, showing tubes for the admission of air. Fig. 3 is aside and end View in detail of the air-tubes.

A indicates a straw-burning boiler con prising a boiler-shell, within which is lOCftiKf'il the furnace consisting of an ash-pit (Z, a lire-box 1, and a combustion-chamber 8, extending laterally of the fire-box and into the waist b of the boiler. The forward end of the combustion-chamber is provided with a tube-sheet c, from which tubes (4 extend forwardly through the boiler to the forward tube-sheet 2. The shell A is provided at its forward end with a smoke-stack or chimney 3, connecting therewith, a smoke-chamber 4- being left between the forward flue-sheet 2 and the forward end of the boiler-shell immediately beneath the stack. The forward end of the lire-box is separated from the boiler-shell by means of the wall (2. The combustion-chamber of course lies in the direct line of draft between the lirebox and the tubes or lines a, the consumed gases and products of combustion passing from the lire-box into the combustion-chamber and thence through the fines into the smokeboX 4 and up the stack.

Transversely of the combustion-chamber and in alinement with and above the wall eof the fire-box are located the air-inlet tubes z', the tubes beinglocated at the entrance to the combustion chamber from the lire-box and form longitudinal passage-ways for the admission of atmospheric air to the combustionchamber, which is admitted into the outer open ends of the tubes, which pass through the furnace-walls and'boiler-shelhand the air so admitted passes out through the, apertures 70 into the chamber, by which apertures the air is directed toward the products of combustion, which are thus brought in contact *with the air and mixed therewith in such proportions as to produce aliaine of intense heat for consuming the smoke and heated gases. The elfect of the intimate mixing of the air and gases in such proportions as to cause the ignition of the gases before passing out, is to produce a greater amount of heat from the fuel, and the consumption of the smoke keeps the fire-tubes a perfectly clean. The tubes 2' are connected by hollow standards 12, thus bringing the tubes in communication with each other, permitting the air to pass freely between the plurality of air-inlet tubes. The air-inlet tubes are located immediately over and. in line with the back wall 0 of the boiler. It will be noted that the products of combustion must pass the opening between was;

the tubes and in so doing mix with the air. l rality 0t apertured air-inlet tubes located beit Will be noted that one or more tubes can be used. Hence I do not limit myself to the construction shown.

Having fully described my invention, What I claim, and desire to secure by Letters Patent. is

1. The combination with a furnace, of a plurality of apertured air-inlet tubes having open ends and extending across the furnace and through the walls thereof, and at hollow standard connecting the tubes intermediate their ends and within the furnace for strengthening the tubes and permitting intereonnnnnication.

2. The combination With aturnace, of a plul tween the lire-box and combustion, the tubes sustained at their ends in thewallsot' the furnace, and a hollow standard connecting the tubes intermediate their ends. the tubes being spaced apart from each other and tlOlH the walls oi the furnace to permit the passage of the products of combustion below, ubovo I and between the same.

igncd at Mansliehl, Ohio, this lSth day ot 11:13, 190i.

Ml (ll EAEL El )lVAll l) )ASEY.

Witnesses:

JonN H. Coss, R. \V. lllurrunu. 

